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  1. kellys_eye

    crt tv horizontal display problem

    Without a schematic to reference to what do you expect us to advise? Or should we just guess? I can't find any reference to match the details you have already given. Unless you can show us a picture of the board or the diagram we're pretty much in the dark. Have you checked the sync pulses...
  2. kellys_eye

    single phase inverter

    It can connect across one of the phases but there is usually a requirement to 'balance' the load on the phases so isn't recommended.
  3. kellys_eye

    Difficulty to find components

    The battery consumption is calculated in the same way as totalling the currents required for the Raspi and its peripheral devices. Make allowance for the length of time you want the portable unit to work for i.e. total current = 600mA, working time = 10 hours so battery capacity would be 0.6 x...
  4. kellys_eye

    Fender stage 160 amp blowing fuses

    You could fit the LM317/LM337 with the appropriate resistors chosen to give the exact output voltage or fit an 7815/7915 pair with diodes in the ground leg to bump the output to 16V.
  5. kellys_eye

    crt tv horizontal display problem

    We need the make and model of the TV set, not the pcb.
  6. kellys_eye

    Difficulty to find components

    Your power pack needs to have at least the total current capability of ALL the systems connected to it - in this case, and according to your block diagram, this comprises the Raspi, the RTC and the Display. The 2.5A power pack will easily power the Raspi (400mA) and RTC (10mA) but you have to...
  7. kellys_eye

    Video rotation

    D'uh..... everyone knows that :p
  8. kellys_eye

    What trends of Electrical Engineering Market that will make good money in 5 years.

    I laughed out loud at the battery suggestion - jeez.... does anyone in a position of authority have any sense whatsoever? Don't answer that, I already know.
  9. kellys_eye

    Different Voltages in a single circuit - Pullup States

    Yes.
  10. kellys_eye

    What trends of Electrical Engineering Market that will make good money in 5 years.

    Nuclear power generation delivers HUGE quantities of power that simply cannot be matched by any reasonable amount of solar, wind or hydro power. There will be no option other than to build NEW nuclear (unless fusion comes to fruition) as there is no escaping the fact that the worlds energy...
  11. kellys_eye

    Rechargeable Power Supply Question

    The $64,000 question... I can't even POST those kind of modules in the UK for the price they make, sell and deliver them for!
  12. kellys_eye

    Video rotation

    LOL - ok.... I'll elaborate. I want to make a video monitoring system that works on the principle of a vertically mounted HD camera with optical zoom (40x) - only because I have one lying around doing nothing.... The idea was to make a system that allowed full 360 pan and limited tilt. The...
  13. kellys_eye

    What trends of Electrical Engineering Market that will make good money in 5 years.

    Solar and hydro are the only potential future 'renewables' - wind is toast. Even solar is only useful for limited locations (to realise its full potential) and NO renewables should have to rely on subsidies. It either succeeds or it fails on its own merits.
  14. kellys_eye

    Video rotation

    Sorry - just typing the question made me think of the answer!
  15. kellys_eye

    Futaba 9-bt-26

    What equipment is it from? You will only likely find one in some old equipment anyway - rare as rocking horse droppings.
  16. kellys_eye

    using cv in and out between dual rail and single

    As long as the common rails are tied and the control voltage is in the right 'direction' there will be no issues.
  17. kellys_eye

    Electrical/Electronic Question

    make/model?
  18. kellys_eye

    Rechargeable Power Supply Question

    Either of those will be ideal - you're quite likely to have a small USB charger somewhere you can use for it too. The items I linked to were 'suggestive' with the aim to provide you with an idea of what was required and, happily, you've found exactly the items required. Good luck with your...
  19. kellys_eye

    Onkyo Integrated Amp With Incredibly Low Volume

    Have you checked the source signal is ok? No short on the input?
  20. kellys_eye

    Leaked Battery Motherboard Repair

    Don't give up immediately. Although it's a multi-layered board your DIN socket may only use the top/bottom layers - you'll never know without the pcb layout drawing which is impossible to source in most cases - so do your best with the soldering and try to power it up. It can come to no more...
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